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What is FRCM?

Repair, protect and strengthen aging, damaged or overloaded concrete and masonry structures in one application and significantly reduce your installed cost.

FRCM or Fabric-Reinforced Cementitious Matrix combines high-performance sprayable mortar with a carbon-fiber grid to create thin-walled, reinforced concrete shells without adding significant weight or mass to the structure.


  • Repair and strengthen structures using only a thin layer of material
  • Can be applied in multiple grid layers (four maximum) to achieve desired strengthening – ½”-1” (12.7-25.4 mm) thick for one-layer grid applications, adding ½” (12.7 mm) for each additional grid layer
  • Lightweight system for vertical surfaces and overhead applications
  • Suitable for harsh environments or service conditions including marine locations, elevated temperatures, humidity, abrasion and UV
  • Works on damp substrates
  • Installation process is similar to that for wet shotcrete repair mortars
  • Quick installation with less preparation than traditional shotcrete repairs with rebar
  • Does not create a vapor barrier
  • Matches substrate finish
  • 100% solids formulation
  • Carbon-fiber grid features excellent chemical and corrosion resistance
  • Non-hazardous shipping
FRCM application
The cementitious matrix repairs surface defects and bonds the system to the substrate in one step.

FRCM System Products

The FRCM system consists of two components: a sprayable, polypropylene-fiber-reinforced cementitious matrix and a carbon-fiber grid.

FRCM System Products
Product Bag Size Roll Size Model No.
CSS-CM Cementitious Matrix 55 lb. (24.9 kg) CSS-CM
CSS-BCG Bidirectional Carbon Grid 77 in. (1.95 m) x 164 ft. (50 m) CSS-BCG19550
CSS-UCG Unidirectional Carbon Grid 77 in. (1.95 m) x 164 ft. (50 m) CSS-UCG19550
UL Listed

These products are part of the tested assembly in UL Design No. N859, which achieved a four-hour fire rating when subjected to ASTM E119 / UL 263 full-scale fire testing. Please refer to UL Online Certifications Directory for the UL listing.

Request More Info

For complete information regarding specific products suitable to your unique situation or condition, contact us to speak with a local technical representative or engineer.

CSS CM product shot
Cementitious matrix and carbon-fiber grid.
Bidirectional Carbon Grid and Unidirectional Carbon Grid
Bidirectional (left) and unidirectional grid (right).